Split tawashi into lib+executable to enable unit testing

src/tawashi_implem/cgi_environment_vars.cpp

@@ -0,0 +1,35 @@
+/* Copyright 2017, Michele Santullo
+ * This file is part of "tawashi".
+ *
+ * "tawashi" is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * "tawashi" is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with "tawashi".  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cgi_environment_vars.hpp"
+#include "get_env.hpp"
+#include <utility>
+
+namespace tawashi {
+	std::vector<std::string> cgi_environment_vars() {
+		using boost::string_ref;
+
+		std::vector<std::string> retlist;
+		retlist.reserve(CGIVars::_size());
+
+		for (CGIVars var : CGIVars::_values()) {
+			auto value = get_env_as<std::string>(var._to_string(), "");
+			retlist.push_back(std::move(value));
+		}
+		return retlist;
+	}
+} //namespace tawashi